1933 Austin 7

It's powered courtesy of a naturally aspirated engine of 0.7 litre capacity. This unit features side valve valve gear, 4 cylinder layout, and 2 valves per cylinder. It produces 12 bhp (12.2 PS/8.9 kW) of power. It is claimed to attain a top speed of 80 km/h (50 mph).


Key facts

1933 Austin 7 information summary

How long?
3023 mm
What size engine?
0.7 litre, 747 cm3
How many cylinders?
4, Straight
How much power?
12.2 PS / 12 bhp / 8.9 kW
How much torque?
How quick?
0-60 mph: -1 s
How quick?
0-100 km/h: -1 s
How fast?
80 km/h, 50 mph

Austin 7 models

2 door roadster FR 4M 749 cm3 21.3 PS 21 bhp 15.7 kW 470 kg
2 door roadster FR 4M 749 cm3
sedan/​saloon FR 4M 747 cm3 17.2 PS 17 bhp 12.7 kW 635 kg
1933 Austin 7 data
Body type
Number of doors
dimensions & weights
Wheelbase 2057 81
Track/tread (front)
Track/tread (rear)
Length 3023 119
Width 1588 62.5
Ground clearance
length:wheelbase ratio 1.47
Kerb weight
Weight distribution
fuel tank capacity
Drag coefficient
Frontal area
engine type naturally aspirated petrol
Engine manufacturer Austin
Engine code
Cylinders Straight 4
Capacity 0.7 litre
747 cc
(45.585 cu in)
Bore × Stroke 56 × 76 mm
2.2 × 2.99 in
Bore/stroke ratio 0.74
Valve gear side valve (SV)
2 valves per cylinder
8 valves in total
maximum power output 12.2 PS (12 bhp) (8.9 kW)
Specific output 16.1 bhp/litre
0.26 bhp/cu in
maximum torque
Specific torque
Engine construction
compression ratio
Fuel system
bmep (brake mean effective pressure)
Maximum RPM
crankshaft bearings
Engine coolant Water
Unitary capacity 186.75 cc
Aspiration Normal
Compressor N/A
Intercooler None
Catalytic converter N
Acceleration 0-80km/h (50mph) 35 s
Acceleration 0-60mph -1 s
Acceleration 0-100km/h -1 s
Acceleration 0-160km/h (100mph) -1.00 s
Standing quarter-mile
Standing kilometre
Maximum speed 80 km/h (50 mph)
Power-to-weight ratio
Weight-to-power ratio
fuel consumption
Fuel consumption
universal consumption (calculated from the above)
Carbon dioxide emissions
Carfolio Calculated CO2 ?
VED band (UK)
CO2 Effizienz (DE)
Engine position front
Engine layout longitudinal
Drive wheels rear wheel drive  
Torque split N/A
turns lock-to-lock
Turning circle
Front suspension LA.SE.
Rear suspension LA.QE.
Wheel size front
Wheel size rear
Tyres front
Tyres rear
Brakes F/R
Front brake diameter
Rear brake diameter
Braked area
Top gear ratio
Final drive ratio
Carfolio.com ID14707
Production total
Model code
Model family
RAC rating 7.8
Insurance classification No information available
Tax band No information available
1933 Austin 7 added before December 1995.
Last modified 2013-02-28.